The Grand Solar Minimum theory is equally as convincing as the Incoming Planetary System theory.
Nobody knows for sure but both theories conveniently explain current weather, climate, volcanic, tectonic and atmospheric events and inconsistencies.
Presumably one will be correct, but whichever one it is, is irrelevant as we have no future with either.

In central Europe, March has been unusually cold, but then since start of April, the weather is unusually warm and dry, it’s almost like summer temperatures already.

Recently I’ve seen a map showing April temperature anomalies globally, and while north America had 13°C colder temperatures than normal, Europe had 13°C warmer temperatures than normal. (Not sure about exact numbers, it was on TV weather report and I had just few seconds to study it)

A very unusual beautiful spring has been predicted for Germany for the year when WW3 will take place, with a cold spell in early summer. The descriptions for Jan., Feb., March and April are much more detailed than what I am telling you here. March (and probably also January) does not fit the bill this year, so it’s probably not this year. Also the rivers are predicted to run very low on water during that year.